If you are outdoors and 20 feet away from someone you should be fine. People aren't getting this outdoors twenty feet away from others. Even if it travels 20 feet it would be so dissipated you would get such a small part of the virus you aren't going to be harmed.
Very dismayed to read this. Average age out there must be older, relatively speaking, and so quite concerning. Since I will be in Miami, I am encouraged to see that its mayor is reclosing to a certain extent. Superficially, the mortality rate (deaths / total confirmed infected) has been decreasing, but this is deceptive; it's due to the rapid increase in the number of cases outrunning the increase (not decrease) in number of deaths.